Do compact fluorescent bulbs reduce mercury pollution?

In places that rely heavily on coal for electricity, such as West Virginia or China, the researchers say switching to CFLs can reduce mercury emissions significantly. But cleaner-powered places like California and Norway would do better to stick to incandescent bulbs when it comes to reducing mercury. “The places known for sustainability are the places that have the potential to do the most harm by bringing this technology in,” says environmental engineer Julie Zimmerman of Yale, a coauthor of the study.

Do compact fluorescent bulbs reduce mercury pollution?.

The good news is that in general, CFLS reduce mercury emissions significantly compared to using regular bulbs in most cases. Very unfair on CFL mercury! This works if you assume that every mg of mercury in a CFL is going to be released into the air, which is bogus. They can be, and are recycled, or they end up being landfilled, where they will not escape for a while. I’ve never broken one in many years of use. This is not a fair comparison at all, and if you have to reach to California and Norway to make a point, you’ve lost it. The reason California and Norway (more about Norway in a later blog post) are more energy efficient is because they use more energy efficient systems (like CFLs) in the first place. Therefore, they do not have to rely on coal for energy requirements. Of course, they are also lucky to have hydroelectric/geothermal sources, but they avoid coal for good reason.

If you reduce power usage by increasing efficiency, you don’t have to build more power plants (clean or otherwise) and that is good for everyone concerned.

Yes, the take home message is that due to the presence of a hazardous ingredient, CFLs need to be viewed as a bridge technology to LEDs. Point taken, but given that they have all those advantages over regular light bulbs, this is no bridge to nowhere!

Similar Posts

  • Tar Sands Don't Fit in the Clean Energy Economy

    On February 19 President Obama will visit Canada. Prime Minister Stephen Harper has asked to discuss a North American agreement on global warming and energy, and it has been widely reported that under such a deal he will seek to shelter the tar sands in Alberta from the same greenhouse gas cuts that other polluters must make.

    We can not be on be on the path to fight global warming and build a clean energy future by ignoring the facts. The tar sands are one of the most destructive projects on earth. They produce oil that has three times the carbon impact per barrel in the production process as regular oil while leaving a long term legacy of toxic tailings lakes and Boreal forest destruction.

    There is a better way. Both the U.S. and Canada have tremendous economic potential in new energy industries and energy efficiency. The tar sands industry must do its fair share in reducing emissions as we make the transition to a new energy economy in North America.

    Tell President Obama that he needs to stay on course to a clean energy future.

    via Obama2Canada

    This is a new cross-border effort by a whole host of Canadian and US environmental big guns including Greenpeace, Environment Defence, the Dogwood Initiative, etc. aimed at lobbying Obama on the Oil (Tar) sands of Alberta.

    A few years ago, only 4% of all Americans knew that Canada was the their largest supplier of oil. So, any efforts aimed at educating Americans on where their oil comes from and the dirtiness of the process involved is welcome.

    Once again, I will say that the future of the Oil Sands is not in Canadian hands, but in American hands. No Canadian government will turn off the tap, not now in this recession, not 3 years from now when we are on our next boom. It is going to take American pressure and the institution of a robust climate change mitigation program in the US. We shall see what happens in 2-3 years time.

    I do not believe this campaign will make any difference whatsoever, Obama is in Canada for something like 3 hours, and presumably will have other things to talk about.

  • Obama, Oil and Canada

    America's dependence on oil is one of the most serious threats that our nation has faced. It bankrolls dictators, pays for nuclear proliferation and funds both sides of our struggle against terrorism. It puts the American people at the mercy of shifting gas prices, stifles innovation, and sets back our ability to compete.

    Obama’s speech on energy (Solveclimate)

    A short, punchy, powerful speech. Two things – First, Obama stresses again and again the necessity to reduce oil consumption and “the dependence on foreign oil”. He mentions wind, solar and efficiency as the three best ways to get there. There is no mention of increasing imports from Canada, the US’ largest supplier. Of course, when he mentions “bankrolling dictators”, Stephen Harper does come to mind 🙂 But the rest of it is puzzling, look at this bar chart of The US’ top 15.

    oil_imports_1000_barrels_per_day

    Really, not too many “unfriendly” countries on the list, It is dominated by the US neighbours Canada and Mexico, and friend, ally and vassal state Saudi Arabia. Yes, there is some Venezuela, but this whole oil imports from unfriendly dictators frame in inaccurate.

    But from the Canadian side of the border, we see things differently. >99% of oil exported from Canada goes to the US, so in essence, our only customer. Any reduction in demand from the US could seriously derail Alberta’s economy. On the other hand, if the US is willing to overlook the seriously dirty nature of Canada’s oil, not that Canadian NGOs haven’t mentioned it to Obama recently, it will not have any problems shifting its buying patterns to favour Canadian oil over Saudi Arabian/Venezuelan oil, at least in theory.

    The US has not attempted to do anything that drastic in many years, so all oil is bought and sold in the world market and price rules, but it will be interesting to see what happens. My view is that any serious carbon legislation will undermine the oil sands’ dirty oil. But we shall see.

  • Canada and Climate Change Regulation – Politics as Usual

    Weasel (from wikipedia)

    *Weasel picture courtesy wikipedia

    “We need to hear more about the American position, the European position, the Chinese position” before considering the bill, McGuinty told CBC News.

    CBC

    With that rather weasely statement, Canada’s Liberal Party signalled that it will support a further delay in a vote that would set realistic limits on Canada’s Greenhouse gas emissions. I was too angry yesterday to write a decent post about it, but hey, as my partner often says, “Anger is a positive emotion”. So, here goes.

    What is it?
    Bill C-311 – The Climate Change Accountability Act. aims to set binding emission targets for greenhouse gas emissions (excluding land use, land use change and forestry) for Canada. Here’s the a short sentence from the preamble:

    this legislation is intended to ensure that Canada reduces greenhouse gas emissions to an extent similar to that required by all industrialized countries in order to prevent dangerous climate change, in accordance with the scientific evidence on the impacts of increased levels of global average surface temperature and the corresponding levels of atmospheric concentrations of greenhouse gases;

    Okay, ending a long sentence with a semi-colon, strange, but there it is, a very clear and concise statement of fact intending for Canada to set realistic targets for GHG reduction

    What are the targets?
    25% below 1990 levels by 2020, 80% below 1990 levels by 2050. This is in line with IPCC recommendations (pdf) (See page 776, thanks Climate Progress) to stabilize temperature rise to < 2°C and GHG concentrations to 450 ppm CO2 eq.
    Hansen, other prominent scientists and activists at 350.org have a more ambitious target in mind, 350 ppm. In comparison, proposed legislation by John Kerry and Barbara Boxer in the US senate would reduce GHG emissions by 20% from 1990 levels, and 80% by 2050. So, this bill proposes targets that are in line with what the world’s greatest polluter (per capita, historical) is proposing and current official consensus. There is a lot of small print in the exemptions, agriculture is a big one on the US side and land use and forestry appear to be a rather significant omission on the Canadian side.

    Bottom Line: The targets are exactly what is recommended by the IPCC, are reasonable and in line with what our biggest trading partner has proposed. They need to be strengthened in the near future, but are good for now.

    What it doesn’t do
    It does not establish a mechanism to bring about these reductions, only specifies that the government come up with scientifically sound interim targets and an emissions reduction regulatory strategy, be it emissions trading, or carbon taxes, etc. That’s fine, given Canada’s balance of powers and separation of province-federal powers, it would be best for an executive approach to regulation writing.

    History

    Bill C-311 is not new. An identical version passed the House of Commons in 2008 and was stymied by an election call. Since Canada has a bicameral legislature, the bill needed to be passed by the Canadian Senate as well and the election blocked this vote. Right now, it needs a vote to get out of committee and on the floor of the House.

    So what happened?
    Well, the NDP wanted to get the bill out for vote. The Bloc Quebecois supported them. The Conservatives, in a delaying tactic, wanted to extend the committee study period for another month, citing a “need for more expert testimony”, the Liberals agreed with them and the bill is stalled for now. Why? It is all politics.

    The Politics
    This is where the story gets interesting, and epitomizes everything that is wrong with Canada’s current political system! Canada is currently (since 2006 and 2 elections on), run by a minority Conservative government. Minority governments work very differently in Canada compared with typical parliamentary democracies such as India, Israel, etc. There are no coalitions, no alliances, especially now since the Conservative party is well to the right of every other party in Parliament. Canada has four other prominent parties, the Liberals, a centrist, business friendly party that has previously governed, the NDP, a left leaning union friendly party, the Green party, an environmental issues and good governance driven party (no seats in parliament), and the Bloc Quebecois, a regional party based in Quebec which wins seats only in Quebec.

    For the Conservative party to pass legislation, they need the support of one other party. Of course, to stymie legislation, they can use various parliamentary procedures. This is why C-311 is a private member’s bill, the government, which is vehemently opposed to any meaningful climate change mitigation regulation, would not bring something like this up for vote.

    The NDP would like to be responsible for meaningful regulation on climate change as it is in line with their stated principles and also neatly aligns with their desire to be seen as a serious opposition party, and as a party capable of governing at the federal level.

    The Liberals, well, they ran their last election on a radical restructuring of the Canadian tax system called the Green Shift. This envisaged a reduction in personal income taxes combined with the establishment of a carbon tax. The Liberals lost the election, and have been a lot more cautious about bringing up environmental issues. I happen to believe that the loss was primarily due to poor election strategy, a leader with the charisma of a freshly painted wall, and a flawed electoral system that allows for too much vote splitting, “wasted” votes and is unrepresentative. But, the media has run with the “it must be the environment” meme, and currently view any environmental legislation as a vote loser. This is in direct contradiction with polling data (pdf) that indicates the opposite to be true.

    Anyway, the Liberals appeared to be getting back into the energy game. Their dear leader Michael Ignatieff (@m_ignatieff) recently tweeted about a revolutionary new clean energy plan, which seems sensible enough and forward thinking. Also, the Liberals supported this identical bill last year, and until recently. Here’s the NDP with a collection of helpful quotes from the Liberals on C-311:

    “Parliamentarians don’t know where this country is going, as a sovereign nation state, on climate change. The really good news and the good faith behind Bill C-311 is helping to prompt a timely debate of where we’re going in advance of the important Copenhagen negotiation.” – David McGuinty, Environment Committee, June 18, 2009

    “[Bill C-311] has been reintroduced under a new MP, a bill that was put forward in the last Parliament by the leader of the NDP. As such, it really has no material changes compared to its predecessor bill.” –David McGuinty, Hansard, March 4, 2009

    “It’s very simple: we won’t be taken seriously until we are serious about the environment.” – Speech to the Vancouver Board of Trade, October 13, 2009 – MIchael Ignatieff

    Unfortunately, the price for success against the government in this half-assed minority government situation is likely an election! Opinion polls indicate that an election held today would likely result in very much the same situation as the last time around, maybe even an increased near majority for the Conservatives.

    Nanos_Oct22_poll_291448artw

    Image courtesy Globe and Mail

    The Conservatives (in blue) have a solid lead over the Liberals (Red) and the NDP (in orange) apparently have a 20% ceiling. In a normal parliamentary system, this would mean an alliance between the NDP and Liberals to win the election pretty handily (note that the votes would not additive, but there is a conservative vote ceiling around 40%). But as long as electoral reform is off the table, and the extremely hidebound Canadian mainstream media does nothing other than bemoan the lack of electoral participation while roundly condemning any alternative that would increase such participation, we are stuck with ths situation in which a Conservative government takes this country slowly rightward where it really does not want to be taken, given that solid majorities are against said conservative policies.

    In Conclusion
    Canada dithers again on climate change. To the core supporters of the Conservative party, this is as should be. However, for the majority of the country, for the international reputation of the country, and for the political system as a whole, this is an unacceptable delay. The Liberals win no friends by being indecisive and showing no leadership. The NDP is stuck with no amount of “responsible” opposition work giving it any traction in the polls, the political intelligentsia of Canada would not accept an NDP ascendancy. The political system does not reward cooperation. So, we remain stuck, a country of many beautiful words and very little action.

    Happy Friday!

    * – I like weasels!

  • Obama: Warming must be tackled now – Climate Change- msnbc.com

    He wasn’t expected to make an appearance, let alone a splash, but President-elect Barack Obama on Tuesday delivered a videotaped message to a climate change summit convened by California Gov. Arnold Schwarzenegger, vowing quick action to curb emissions and engage in international talks.

    You can be sure that the United States will once again engage vigorously in these negotiations, and help lead the world toward a new era of global cooperation on climate change," he told hundreds of scientists, executives, governors and even foreign officials gathered in Los Angeles.

    via Obama: Warming must be tackled now – Climate Change- msnbc.com

    No longer the climate outcast, is the president of the United States, that proud designation among the so called developed country leaders would now be Steven Harper.

  • Tuesdays with Turtles – New US Regulations

    The National Marine Fisheries Service protects turtles in the US. Here, bycatch, or the accidental capture of adult sea turtles, is one of the biggest causes of adult turtle mortality. So, it is good that the NMFS is bucking all other recent trends with endangered species (check this salon article about the gutting of the endangered species act) and actually proposing stronger regulation on reducing bycatch.

    NMFS issues this advance notice of proposed rulemaking to announce that it is considering amendments to the regulatory requirements for turtle excluder devices (TEDs). Specific changes NMFS is considering include increasing the size of the TED escape opening currently required in the summer flounder fishery; requiring the use of TEDs in the flynet, whelk, calico scallop, and Mid- Atlantic sea scallop trawl fisheries; and moving the current northern boundary of the Summer Flounder Fishery-Sea Turtle Protection Area off Cape Charles, Virginia, to a point farther north. The objective of the proposed measures would be to effectively protect all life stages and species of sea turtle in Atlantic trawl fisheries where they are vulnerable to incidental capture and mortality. NMFS is seeking public comment on these potential amendments to the TED regulations. NMFS is also soliciting public comment on the need for, and development and implementation of, other methods to reduce bycatch of sea turtles in anycommercial or recreational fishery in the Atlantic and Gulf of Mexico where sea turtle conservation measures do not currently exist.

    Well, that’s good news, and since I read the whole regulation twice over and did not change my mind about it, it must be good news, really!! Apparently, I write good news stories too!

    Sea turtles are lucky to be so accessible, beautiful, completely harmless, long lived and loved, they would not get half the attention they get otherwise!

  • Gapminder -Visualize Global Development Data

    I must have been living in a cave somewhere to not have heard of this before today.

    The Gapminder World 2006, beta

    Gapminder is a non-profit venture that develops information technology for provision of free statistics in new visual and animated ways. In short, it enables you to make sense of the world by having fun with statistics. Our method is to turn boring data into enjoyable interactive animations using Flash technology. Gapminder is a Foundation in Stockholm, Sweden. Funding has been mainly by grants from Swedish International Development co-operation Agency, Sida. In collaboration with United Nations Statistic Division we promote free access to searchable public data and our animations of different types of data are freely available at www.gapminder.org.

    The Pros
    You have to take it for a test drive to see how cool it is, especially the animations to see how parameters like life expectancy, population, etc. change over time. You can pick countries to compare, or just scatter plot everyone. Look at Botswana’s life expectancy, for instance, see it peak in 1987 at 65 years and start a steep  plummet to 35 years in 2004 as its AIDS mass murder (epidemic is a word that does do this one justice) took hold. To watch the dot for life expectancy drop that quickly as you animate it is pretty powerful, as powerful as a statistic can be. Each parameter you change also changes the URL, so you can send links easily.

    The Cons
    You have to plot something against something else. Not everything is a scatter plot between two variables, you use it long enough, and you start seeing correlations (=causations!) where none exist. There’s no way to extract plots to use for later, though I guess you can do a screen capture.

    Regardless, very cool, and nothing beats free access to large amounts of data that previously needed specialists to visualize and make sense of.